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author | Juan J. Martinez <jjm@usebox.net> | 2023-02-20 21:52:22 +0000 |
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committer | Juan J. Martinez <jjm@usebox.net> | 2023-02-20 21:52:22 +0000 |
commit | ed585355b1f78de15885e803138a98b75ca2b1e2 (patch) | |
tree | da25f10539fa39ee284dc49ab9d5e53721bc008f /src/Game/Entities/Slime.hs | |
parent | 92785d2df84e18953048a6537b71c824a2a4b288 (diff) | |
download | space-plat-hs-ed585355b1f78de15885e803138a98b75ca2b1e2.tar.gz space-plat-hs-ed585355b1f78de15885e803138a98b75ca2b1e2.zip |
Split entities in modules.
Diffstat (limited to 'src/Game/Entities/Slime.hs')
-rw-r--r-- | src/Game/Entities/Slime.hs | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/Game/Entities/Slime.hs b/src/Game/Entities/Slime.hs new file mode 100644 index 0000000..91e756f --- /dev/null +++ b/src/Game/Entities/Slime.hs @@ -0,0 +1,51 @@ +module Game.Entities.Slime (mkSlime) where + +import Data.Bits (Bits (..)) +import Data.IORef +import Game.Entities.Common +import Game.Entities.Const +import Game.Entities.Types +import qualified Game.Sprites as S + +mkSlime :: S.SpriteSheet -> Int -> Int -> IORef Entity -> IsBlocked -> IO () -> IO Entity +mkSlime sprites x y playerRef isBlocked hitPlayer' = do + s <- S.get sprites "slime" + pure + Entity + { typ = TypeEnemy, + x = x, + y = y, + delay = frameDelay, + frame = 0, + jumping = False, + gravity = gravityOff, + dir = DirRight, + sprite = s, + update = updateSlime (collision playerRef) isBlocked hitPlayer', + destroy = False, + spawns = [] + } + +updateSlime :: Collision -> IsBlocked -> IO () -> Entity -> IO Entity +updateSlime touchedPlayer isBlocked hitPlayer' e = do + touched <- touchedPlayer e + let updated = updateSlimeFrame + if touched then fmap (const e) hitPlayer' else pure $ updateMovement updated + where + updateMovement :: Entity -> Entity + updateMovement ent + | testBit ent.delay 1 = ent + | ent.dir == DirLeft + && (isBlocked (ent.x - 1) (ent.y + 15) || isBlocked (ent.x - 1) (ent.y + 10) || not (isBlocked (ent.x - 1) (ent.y + 16))) = + ent {dir = DirRight} + | ent.dir == DirLeft = ent {x = ent.x - 1} + | ent.dir == DirRight + && (isBlocked (ent.x + 16) (ent.y + 15) || isBlocked (ent.x + 16) (ent.y + 10) || not (isBlocked (ent.x + 16) (ent.y + 16))) = + ent {dir = DirLeft} + | ent.dir == DirRight = ent {x = ent.x + 1} + | otherwise = ent + updateSlimeFrame :: Entity + updateSlimeFrame + | e.delay > 0 = e {delay = e.delay - 1} + | e.frame + 1 < frameLimit e = e {delay = frameDelay + 2, frame = e.frame + 1} + | otherwise = e {delay = frameDelay + 2, frame = 0} |